Add Brave CDP automation, replace Oracle browser mode

Connects to user's running Brave via Chrome DevTools Protocol
to automate ChatGPT interaction. Uses puppeteer-core to open a
tab, send the prompt, wait for response, and extract the result.

No cookies, no separate profiles, no copy/paste. Just connects
to the browser where the user is already logged in.

One-time setup: relaunch Brave with --remote-debugging-port=9222

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

node_modules/end-of-stream/package.json

@@ -0,0 +1,37 @@
+{
+  "name": "end-of-stream",
+  "version": "1.4.5",
+  "description": "Call a callback when a readable/writable/duplex stream has completed or failed.",
+  "repository": {
+    "type": "git",
+    "url": "git://github.com/mafintosh/end-of-stream.git"
+  },
+  "dependencies": {
+    "once": "^1.4.0"
+  },
+  "scripts": {
+    "test": "node test.js"
+  },
+  "files": [
+    "index.js"
+  ],
+  "keywords": [
+    "stream",
+    "streams",
+    "callback",
+    "finish",
+    "close",
+    "end",
+    "wait"
+  ],
+  "bugs": {
+    "url": "https://github.com/mafintosh/end-of-stream/issues"
+  },
+  "homepage": "https://github.com/mafintosh/end-of-stream",
+  "main": "index.js",
+  "author": "Mathias Buus <mathiasbuus@gmail.com>",
+  "license": "MIT",
+  "devDependencies": {
+    "tape": "^4.11.0"
+  }
+}